2020-18-08: Engine Air Intake System

Adoption of the Amendment \n\n\n\tAccordingly, under the authority delegated to me by the Administrator, the FAA amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: \n\nPART 39--AIRWORTHINESS DIRECTIVES \n\n0 1. The authority citation for part 39 continues to read as follows: \n\n\n\tAuthority: 49 U.S.C. 106(g), 40113, 44701. \n\n\n\nSec. 39.13 (Amended) \n\n0 2. The FAA amends Sec. 39.13 by: 0 a. Removing Airworthiness Directive (AD) 2019-12-18, Amendment 39-19673 (84 FR 32028, July 5, 2019); and 0 b. Adding the following new AD: \n\n\n\t2020-18-08 Robinson Helicopter Company: Amendment 39-21229; Docket No. FAA-2020-0786; Project Identifier AD-2020-00914-R. \n\n(a) Effective Date \n\n\n\tThis AD is effective August 27, 2020. \n\n(b) Affected ADs \n\n\n\tThis AD replaces AD 2019-12-18, Amendment 39-19673 (84 FR 32028, July 5, 2019) (''AD 2019-12-18''). \n\n(c) Applicability \n\n\n\tThis AD applies to Robinson Helicopter Company Model R44 II helicopters, certificated in any category, with an orange silicone engine air induction hose (hose) part number (P/N) A785-31 installed. This AD does not apply to helicopters with a black neoprene hose P/N A785-31 installed. \n\n(d) Subject \n\n\n\tJoint Aircraft System Component (JASC): 7160, Engine Air Intake System. \n\n(e) Unsafe Condition \n\n\n\tThis AD was prompted by reports of separation between the outer and inner layers of a hose. The FAA is issuing this AD to prevent blockage of air flow to the engine, engine stoppage, and subsequent loss of control of the helicopter. \n\n(f) Compliance \n\n\n\tComply with this AD within the compliance times specified, unless already done. \n\n(g) Required Actions \n\n\n\t(1) For helicopters with serial numbers (S/Ns) 14168 through 14314 inclusive (except S/Ns 14269, 14287, 14299, and 14304), or with an orange silicone hose P/N A785-31 installed after October 1, 2017, and before the effective date of this AD, within 10 hours time-in-service (TIS) after the effective date of this AD: \n\t(i) With the hose removed, inspect the inside of the hose for separation between the outer and inner layers, and flex the hose in all directions while listening for a crinkling sound, which is an indication of separation. \n\t(ii) If there is any separation or a crinkling sound, before further flight, remove the hose from service. \n\t(iii) If there is no separation and no crinkling sound, and the hose is marked with \n\n((Page 52893)) \n\ncode 3Q17 or 1Q18 or an illegible code, within 50 hours TIS, remove the hose from service. \n\t(2) For all helicopters identified in paragraph (c) of this AD, accomplish the inspection required by paragraph (g)(1)(i) of this AD within 100 hours TIS after the effective date of this AD or at the next annual inspection after the effective date of this AD, whichever occurs first, and thereafter at intervals not to exceed 100 hours TIS or at each annual inspection, whichever occurs first. If there is any separation or a crinkling sound, before further flight, remove the hose from service. \n\t(3) As of July 5, 2019 (the effective date of AD 2019-12-18), do not install on any helicopter an orange silicone hose P/N A785-31 marked with code 1Q18. \n\t(4) As of the effective date of this AD, do not install on any helicopter an orange silicone hose P/N A785-31 marked with code 3Q17 or an illegible code. \n\n(h) Alternative Methods of Compliance (AMOCs) \n\n\n\t(1) The Manager, Los Angeles ACO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (i) of this AD. Information may be emailed to: [email protected]. \n\t(2) Before using any approved AMOC, notify your appropriateprincipal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. \n\t(3) AMOCs approved for AD 2019-12-18 are approved as AMOCs for the corresponding provisions of this AD. \n\n(i) Related Information \n\n\n\tFor more information about this AD, contact Roger Gretler, Aerospace Engineer, Los Angeles ACO Branch, Compliance & Airworthiness Division, FAA, 3960 Paramount Blvd., Lakewood, CA 90712; phone 562-627-5251; email [email protected]. \n\n\n\tIssued on August 21, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2020-18829 Filed 8-26-20; 8:45 am) BILLING CODE 4910-13-P